Put AIN files in the "old" directory.
Run "get.bat"
Edit TXT files in the "txt" directory.
Run "put.bat"
The new AIN file appears in the "new" directory.

Warning, if you're working on editing the text, don't run Get again, otherwise you'll overwrite everything!

For older games (like Sengoku Rance), use get_crass and put_crass.
note: text_conv.exe may fail on some games (like Big Bang Age), it's not my code.